I asked the owner of my local shop that question not that long ago and he told me that the cellophane that the cigars come in is breathable so it doesnt hurt them to keep them in. The main reason for keeping them in the cellophane is to keep the oils from the wrappers from mixing with other cigars. Unless you have deviders in your humidor if you dont want to get some of the flavor from say a maduro to get into a connecticut keep the cellophane on.